/Engine/Source/Runtime/MovieSceneTracks/Public/Systems/MovieSceneComponentAttachmentSystem.h
class UMovieSceneComponentAttachmentSystem : public [UMovieSceneEntityInstantiatorSystem](API\Runtime\MovieScene\EntitySystem\UMovieSceneEntityInstantiatorSys-), public [IMovieScenePreAnimatedStateSystemInterface](API\Runtime\MovieScene\EntitySystem\IMovieScenePreAnimatedStateSyste-)